Locking device



(No Model.) 2 sheets-sheet' 1. J SCHADE LQGKING DEVICE.

No. 537,311'. Patented Apr. 9, 1895.

Wikncssesr @a WMM (No Model.) 2 Sheets-Sheet 2.

J. SCHADE. LooKlNG DEVICE.

No. 537,311. PatentedApr. 9, 1.895..

. 'I iur: Witnesses: nu

I 4170-7772 Qcde [l Attorne.

UNITED STATES f 'PATENT OFFICE.

JOHN SCHADE, OF BROOKLYN, NEW YORK.

LOCKING DEVICE.

SPECIFICATION fOlmng part Of Letters Patent N0. 537,311, dated April 9,1895.

' Application flled September 13, 1894:. Serial No. 522,922. (No model.)

To all whom it may concern:

Be it known that I, JOHN SCHADE, a citizen of the United States, and aresident of Brooklyn, in the county of Kings and State of New York, haveinvented certain new and useful Improvements in Locking Devices; and Ido declare the following to be a full, clear, and exact description ofthe invention, such as will y enable others skilled in the art to whichit appertains to make and use the'same, reference being had to theaccompanying drawings, and to letters of reference marked thereon, whichform a part of this specification.

Figure l is a perspective view of cook with look therefor applied, theunlocked position of parts being shown in dotted lines. Fig. 2 is an endview showing opposite side of same. Fig. 3 is an elevation showinglocking disks in rst position. Fig. 4 is a front view of locks incorresponding position. Fig. 5 is an elevation showing locking disks insecond position. Fig. 6 is a front view of locksin correspondingposition. Fig. 7 is a detail of cap plate. Fig. 8 is an elevationshowing a modification of part of invention.

This invention, has relation to certain new and useful improvements inlocking devices, of that class which are employed for the purpose ofinsuring or compelling the performance of an act or duty by renderingthe performance of a second necessary act absolutely dependent upon theperformance of the first.

Mechanism of this character is of great importance for various purposes,and is of especial value for use in buildings as a means of compellingthe closing off of the water, gas, electricity, &c., when the buildingis closed for the night, and thereby avoiding danger of Waste, leakage,or overow, and the loss and damage to property which frequently resultsfrom the carelessness of the clerk or porter in charge who neglects toproperly perform his duties. Most, if notall of the devices heretoforeemployed for this purpose have been ineflicient for the reason that themechanisms have been .of such character as to afford easy opportunitiesyfor the person in charge to beat or evade them, this being almatter ofless labor than that required for the proper performance of his duties.

The object of the present invention is to provide means of .thischaracter of simple nature,

but of positive action and of such nature that it is practicallyimpossible to beat or evade their proper operation.

With this object in view the invention consists in the novelconstruction and combination of parts, all ashereinafter described, andpointed out in the appended claims.

In the present instance I have devised mechanism of the above characterwherein the performance by the clerk, porter, or other person in chargeof his duties is made imperative by reason of the fact that until he hasdone this it is impossible for him to lock up the building, the releaseof the flocking up key being absolutely conditioned upon the performanceof the preliminary duties; and the invention more particularly consistsin providing the locking up key with a secondary key inseparablyattached thereto, a series of mutually dependent locks of suitablecharacter, which serveA as holders for the secondary key and for aseries of non-exchangeable keys which control the opening and closing ofthe various, valves or switches of the water, gas, or other supply pipesor electric Wires; said locks being so arranged that the valve or switchkeys can be released therefrom only by the use of the secondary key, andthat when said valve or switch keys have been released and removed, thesecondary key with its attached door key cannot be removed until afterthe'valve or switch keys have been again inserted in their holders.

The invention further consists in the combination with the above of asuitable lock in connection with each of the valves or switches wherebyany valveor switch cannot be opened except by its own key, and when soopened, the key cannot be removed from the lock until the valve orswitch has been closed, the entire arrangement being such, therefore,that beforevthe locking up key can be made available for use, all thevalves or switches in the building must have been closedand the sevcuredt0 the fixture of such cock, valve, or

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switch, is a lock case B, having a lock G, which may be of any suitableconstruction provided it is of such character that the key D cannot beremoved from the lock except the parts are in certain relations to eachother. A cy1inder lock wherein the key, when in unlocked position, issecured against withdrawal by its engagement with the tumbler pins, ispreferably employed. Attached to the key plug of such lock is an arm E,which, in locking position, engages a socket or groove ct in the valvestem, or similar device, and in the case and fixture thereof, andsecures said valves in closed position. Upon the operation ofthe lock bythe key D,said arm E, by the rotation of the key plug, moves out of suchengagement with the valve, which can then be opened; but the key Dcannot then be removed from the lock until the valve has been closed,since the impingement ot' the arm E against the valve will prevent thekey plug from rotating, except the socket 01 groove a be brought intoproper relation thereto, which occurs only when the valve is closed.

I do not, however, limit myself to the above devices, since my otherdevices capable of similar action may be employed, the inventionrequiring merely a lock having a key which cannot be removed except thevalve be closed.

F designates a block or case which is designed to be located intheoffice ot' the building, or at any other desired point, and which isfitted with a series of mutually dependent or interlock ng locksdesignated by the letters G, G', G2.

The lock G is designed to be operated by, and form a holder for, a keyIl, which is inseparably attached to a key H', which in the presentinstance is supposed to be the key which operates the lock of the frontdoor ofthe building. The connection between the two keys may consist ofa solid ring 1212.

Although I have shown but two locks in addition to the lock G, thenumber actually employed in any ease will depend upon the number ofduties which it is required the porter shall perform. For instance, inthe illustrations, the lock G' forms the holder for the key D whichcontrols the lock of the water cock or valve, and the lock G2 the holderfor the key D' which controls the lock of the gas cock. Where thebuilding is furnished with electricity, a third lock would be providedfor the key of the controlling switch. These locks G, G', G2, arepreferably of the ordinary cylinder form, and correspond respectivelywith the several locks attached to the different valves, cocks, orswitches, the pins or tumblers of the locks preventing the withdrawal oftheir keys except in certain positions.

On the inner end portion of the key plug I, of each of these locks andarranged to rotate therewith, is a cam disk, said disks being designatedby the letters K, K', K2. The

" disks K, K2 are cut away peripherally at 7c forming stop shoulders,designed to engage pins j carried by a cap plate .T and thereby limitthe rotation of the disks. The disk K' has an arcuate slot 7a whichengages a similar pin 7ttor the same purpose. Said disks K, K' K2, arealso each cutaway peri pherall v to form the respective arcuateeoncavities Z, Z', of a radius corresponding to that ot the central diskK', which has two similar concavities Z2, Z2. These concavities formmeans whereby the disks K, K', K2 may be mutually interlocked in themanner presently described.

The operation is follows: The porter, clerk, or other person'in chargeot' the build ing or whose duty it is to open and close the same, uponhis arrival in the morning unlocks the front door and removes therefromthe key H' with its inseparately attached key H, and inserts the latterin the lock G. 'lhe disks K, K', K2, are at this time in the positionshown in Fig. 3 the disk K being free to rotate, while the disks K', K2,are locked, owing to the engagement of their eoncavities Z2, Z', onewith the periphery of the disk K, and the other with the disk K'. Thekeys D, D', ofthe water and gas cocks are at this time held in therespective locks G', G2, where they were placed and locked the previousnight,and are incapable of being withdrawn. The key H, is inserted inthe lock G, as above described, and is turned, rotating the disk K,until such disk is stopped by its pin j, at which time the concavity Zis brought oppo- Vsite the corresponding coneavityZ2 ot the disk K'. Thekey D of the corresponding lock G' can now be turned and withdrawn fromthe lock, which leaves the disk K in such position that its concavity Z2is brought opposite the eoneavity Z' of the disk K2, and itspcriphery'into engagement with the concavity Z of the disk K, therebylocking the latter disk, and the keys lI, Il' in the lock G. The key Dcan now be turned and withdrawn,

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and the various disks will be in the positions shown in Fig. 5. Theporter new has his water and gas keys and proceeds to open therespective cocks, which secures the said keys again in the locks C,where they remain. At the time for closing, the porter cannot with drawthe keys H, I-l', from the lock G until he has closed these cocks,withdrawn the keys D, D' from the locks C, and inserted them in thelocks G', G2, and turned them to release the locking engagement of thedisks, K', K2. By reference to Fig. 5 it will be seen that it isimperative that both the keys D, D' shall be placed in the holder locks,G', G2, before the lock G can be actuated, so that the porter iscompelled to perform all of his duties.

In Fig. 8 I have shown a modified form of mechanism for mutually lockingthe locks, G, G', G2. This mechanism comprises a bar P arranged to slideendwise upon the lock case or block and having at one end portion a rackp arranged to be engaged by teeth p',

l tions r of the disks are in contact with the edge of the bar P suchdisks cannot rotate although the bar can move endwise, but when theconcavities R are brought opposite the disks, such disks are permittedto partially rotate, but the bar canhot move, being locked. Theoperation of this arrangement with relation to the keys H and D, D isthe same as in the form first described, as will readily appear, itbeing impossible to withdraw all the keys at the same time.

In place of the rack and pinion connection shown, any other suitableconnection between the disk P and bar B may be employed.

-I-Iaving thus described my invention, what I claim as new, and desireto secure by Letters' Patent, is-

l. The combination with one or more valve or switch locks having each akey which can be Withdrawn only when the valve or switch is closed, of alocking and holding device for each of said keys, a lock for controllingthe operation of the holding device or devices, and a key for operatingsaidA controlling lock,

and having the locking up key inseparably connected thereto,substantially as specified. 2. The combination with a door or locking upkey, of a secondary key inseparably atsaid holding devices and theholding device for said secondary key being mutually dependent upon eachother in their operation, substantially as specified.

3. The combination With a series of cylinder locks, the operations ofwhich are mutually dependent upon one another, and a series of lockablekeys for said locks, of the door key inseparably connected to one ofsaid lockable keys and aseries of valve locks each one of Which iscapable of being operated .by one of said lockable keys, Which key canonly be Withdrawn therefrom when the respective valve is closed,substantially as specified.

4. The combination with a series of cylinder locks, and a series ofnon-exchangeable keys` therefor, of a cam disk carried by the keyplug ofeach lock, said disks being arranged to interlock, and stops forlimitingthe rotation of such disks, substantially asspecitied. y

5. The combination with a seriesv of cylinder locks, and a series ofnon-exchangeable keys therefor, of 'a disk carried by the key iting therotation /of vsaid disks, said disks having peripheral, arcuateconcavities Whereby they lock one with another.

6. The combination with a valve lock or locks for gas, Water, or otherhousehold supplies, of an interlock/ing key holding and securing device,several non-exchangeable lockable keys, and a door key inseparablyattached or connected to one of said lockable keys, substantially asspecified.

In testimony whereof I affix my signature in presence of two Witnesses.y

JOHN SCHADE. Witnesses:

PHILIP C. MASI, GEORGE H. PARMELEE.

' plug of each of said locks, and stops for limv

